This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any.
This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5:
NOTE For further background information on appliance types see CEN/TR 1749:2014."
a) that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b) that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c) where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d) where the maximum operating pressure in the water circuit does not exceed 6 bar;
e) which may or may not give rise to condensation under certain circumstances;
f) which are declared in the installation instructions to be either a “condensing” boiler or a "low temperature boiler" or a “standard boiler”; if no declaration is given the boiler is to be considered a “standard boiler”;
g) which are intended to be installed either indoors or outdoors in a partially protected place;
h) which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit;
i) which are designed for either sealed water systems or for open water systems;
j) which are either modular boilers, or non- modular boilers.
This European Standard also covers gas-fired condensing central heating boilers from the types C(10) that are equipped with a gas-air ratio control and that have a Δpmax, saf(min) of 25 Pa, and C(11) boilers that have condensing boiler modules that are equipped with a gas-air ratio control and that have a Δpmax, saf(min) of 25 Pa."
This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11.
This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any.

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This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as boilers.
Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any.
This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5:
NOTE   For further background information on appliance types see CEN/TR 1749:2014.
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which may or may not give rise to condensation under certain circumstances;
f)   which are declared in the installation instructions to be either a condensing boiler or a "low temperature boiler" or a standard boiler; if no declaration is given the boiler is to be considered a standard boiler;
g)   which are intended to be installed either indoors or outdoors in a partially protected place;
h)   which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit;
i)   which are designed for either sealed water systems or for open water systems;
j)   which are either modular boilers, or non- modular boilers.
This European Standard also covers gas-fired condensing central heating boilers from the types C(10) that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa, ).and C(11) boilers that have condensing boiler modules that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa.
This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11.
This European Standard does not cover all the requirements for:
k)   Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex XC);
l)   Appliances using flue dampers;
m)   Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71, C81 ,C(12) and C(13);
n)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
o)   Appliances incorporating flexible plastic flue liners;
p)   C(10) boilers:
1)    without a gas-air ratio control, or
2)    which are non-condensing appliances, or
3)    which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min)), - ;
q)   C(11) boilers that have boiler modules:
1)    without a gas-air ratio control, or
2)    which are non-condensing appliances, or
3)    which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
r)   Appliances intended to be connected to a (common) flue having mechanical extraction.

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EN 15502-2-2 specifies, the requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners and are hereafter referred to as “boilers”. Where the word boiler is used, this is to be read as the boiler including its connecting ducts, ducts and terminals, if any. This European Standard covers gas-fired central heating boilers type B11, B11BS, B12, B12BS, B13, B13BS according to the classification in CEN/TR 1749:2009: a) that have a nominal heat input (on the basis of net calorific value) not exceeding 70 kW; b) that use one or more combustible gases of the three gas families at the pressures stated in EN 437; c) where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation; d) where the maximum operating pressure in the water circuit does not exceed 6 bar; e) which are declared in the technical instructions to be either a “low temperature boiler” or a “standard boiler”. If no declaration is given the boiler is to be considered a “standard boiler”; f) which are intended to be installed either indoors or in a partially protected place; g) which are either not intended to produce hot water, or are intended to produce hot water either by the instantaneous or storage principle, the whole being marketed as a single unit. h) which are designed for either sealed water systems or for open water systems. This European Standard is to be used in conjunction with the General Requirements Standard EN 15502-1. For applications within the scope of the PED further requirements may be necessary (e.g. situations where the maximum allowable temperature exceeds 110 °C, or where volume times maximum allowable pressure is over 50 bar x litres). This standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction shall be assessed. An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11. This standard does not cover all the requirements for: i) appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD of EN 15502-2-1:2012); j) appliances using flue dampers; k) appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW; l) appliances of the types A, B14, B2, B3, B4, B5 and C; m) appliances intended to be connected to a (common) flue having mechanical extraction; n) appliances with gas/air ratio control; o) modular boilers; p) boilers which can give rise to condensation under certain circumstances; q) boilers intended to be installed in a room with a foreseeable negative pressure relative to the pressure in the flue system.

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This European Standard specifies, the requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners and are hereafter referred to as boilers.
Where the word boiler is used, this is to be read as the boiler including its connecting ducts, ducts and terminals, if any.
This European Standard covers gas-fired central heating boilers type B11, B11BS, B12, B12BS, B13, B13BS according to the classification in CEN/TR 1749:2009:
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 70 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which are declared in the technical instructions to be either a low temperature boiler or a standard boiler. If no declaration is given the boiler is to be considered a standard boiler;
f)   which are intended to be installed either indoors or in a partially protected place;
g)   which are either not intended to produce hot water, or are intended to produce hot water either by the instantaneous or storage principle, the whole being marketed as a single unit.
h)   which are designed for either sealed water systems or for open water systems.
This European Standard is to be used in conjunction with the General Requirements Standard EN 15502 1.
For applications within the scope of the PED further requirements may be necessary (e.g. situations where the maximum allowable temperature exceeds 110 °C, or where volume times maximum allowable pressure is over 50 bar x litres).
This standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction shall be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11.
This standard does not cover all the requirements for:
i)   appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD of EN 15502 2 1:2012);
j)   appliances using flue dampers;
k)   appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
l)   appliances of the types A, B14, B2, B3, B4, B5 and C;
m)   appliances intended to be connected to a (common) flue having mechanical extraction;
n)   appliances with gas/air ratio control;
o)   modular boilers;
p)   boilers which can give rise to condensation under certain circumstances;
q)   boilers intended to be installed in a room with a foreseeable negative pressure relative to the pressure in the flue system.
NOTE   Negative pressure relative to the pressure in the flue system can for example be caused by mechanical or thermal ventilation in airtight buildings.

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This European Standard specifies the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This European Standard applies to boilers of type B, as listed in 4.2:
¾   that use one or more combustible gases of the three gas families at the pressures stated in Tables 16 and 17;
¾   that have a nominal heat input (on the basis of net calorific value) exceeding 300 kW, but not exceeding 1  000 kW, including modular boilers;
¾   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
¾   where the maximum operating pressure in the water circuit does not exceed 6 bar;
¾   that can give rise to condensation under certain circumstances;
¾   of the standard and low-temperature types.
This European Standard applies to boilers designed for sealed water systems or for open water systems.
This European Standard does not contain all the requirements necessary for boilers:
¾   intended to be installed in the open or in living rooms;
¾   permanently fitted with more than one flue outlet;
¾   where the combustion circuit is sealed with respect to the room where the boiler is installed;
¾   of the condensing type;
¾   intended to be connected to a common flue having mechanical extraction;
¾   fitted with a forced draught burner in accordance with EN 676 (see EN 303-7);
¾   producing hot water for domestic purposes.
This standard only covers type testing.
Matters related to quality assurance systems, tests during production, and certificates of conformity of auxiliary devices are not dealt with in this European Standard.

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This standard specifies the requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers".  This standard applies to boilers of type B, as listed in 4.2:   ð that use one or more combustible gases of the three gas families at the pressures stated in Tables 14 and 15;  ð that have a nominal heat input (net CV basis) exceeding 70 kW, but not exceeding 300 kW, including modular boilers;  ð where the temperature of the heat transfer fluid does not exceed 105 øC during normal operation;  ð where the maximum operating pressure in the water circuit does not exceed 6 bar.  The standard applies to boilers designed for sealed water systems or for open water systems.  The standard does not contain all the requirements necessary for boilers:   ð intended to be installed in the open or in living rooms;  ð permanently fitted with more than one flue outlet;  ð where the combustion circuit is sealed with respect to the room where the boiler is installed;  ð of the condensing type;  ð of the low temperature type;  ð intended to be connected to a common flue having mechanical extraction;  ð fitted with a forced draught burner in accordance with EN 676;  ð producing hot water for domestic purposes.  This standard only covers type testing.

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This European Standard specifies the requirements and test methods for the design, manufacturing, safe operation and the rational energy usage for standard boilers and low temperature boilers (with "boiler" in the sense of "boiler body") from steel and cast iron to be equipped with separately marketed forced draught burners according to the relevant burner standards (for automatic forced draught burners for gaseous fuels see EN 676 and for atomising oil burners see EN 267) up to a nominal heat output of 10 MW. They are operated, either with negative pressure (natural draught boiler) or with positive pressure (pressurised boiler) in the combustion chamber, in accordance with the boiler manufacturer's instructions."
This European Standard specifies requirements for boilers with normal operating temperatures between 100 °C and 110 °C and has a "dual structure":
-   For boilers where the shut off temperature of the safety temperature limiter does not exceed 110 °C the Pressure Equipment Directive (PED) requires" Sound Engineering Practice",
-   For boilers where the shut off temperature of the safety temperature limiter exceeds 110 °C this European Standard specifies the requirements of the PED as stated in Annex ZB.
NOTE 1   The "maximum allowable temperature TS" is defined in the PED and its Guidelines."
Boilers in accordance with this European Standard are designed for the heating of central heating installations in which the heat carrier is water, and the maximum allowable operating temperature of which is up to 110 C and the maximum safety temperature limiter of 120 C. The maximum allowable operating pressure is 10 bar.
This standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, oil or gas fired condensation boilers, boilers with oil vaporisation burners. For these boilers there are further requirements.
For gas-fired central heating boilers equipped with a forced draught burner of nominal heat out put not exceeding 1000 kW,see !EN 303-7".
For shell boilers with a nominal heat output exceeding 10 MW and a maximum safety temperature limiter exceeding 120 °C, see EN 12953 series.
NOTE 2 Definitions for standard boiler and low temperature boiler see Council Directive 92/42/EEC."

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This European Standard specifies the requirements and test methods for the design, manufacturing, safe operation and the rational energy usage for standard boilers and low temperature boilers (with "boiler" in the sense of "boiler body") from steel and cast iron to be equipped with separately marketed forced draught burners according to the relevant burner standards (for automatic forced draught burners for gaseous fuels see EN 676 and for atomising oil burners see EN 267) up to a nominal heat output of 10 MW. They are operated, either with negative pressure (natural draught boiler) or with positive pressure (pressurised boiler) in the combustion chamber, in accordance with the boiler manufacturer's instructions."
This European Standard specifies requirements for boilers with normal operating temperatures between 100 °C and 110 °C and has a "dual structure":
-   For boilers where the shut off temperature of the safety temperature limiter does not exceed 110 °C the Pressure Equipment Directive (PED) requires" Sound Engineering Practice",
-   For boilers where the shut off temperature of the safety temperature limiter exceeds 110 °C this European Standard specifies the requirements of the PED as stated in Annex ZB.
NOTE 1   The "maximum allowable temperature TS" is defined in the PED and its Guidelines."
Boilers in accordance with this European Standard are designed for the heating of central heating installations in which the heat carrier is water, and the maximum allowable operating temperature of which is up to 110 C and the maximum safety temperature limiter of 120 C. The maximum allowable operating pressure is 10 bar.
This standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, oil or gas fired condensation boilers, boilers with oil vaporisation burners. For these boilers there are further requirements.
For gas-fired central heating boilers equipped with a forced draught burner of nominal heat out put not exceeding 1000 kW,

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This European Standard applies to type CX3 central heating boilers as specified in 4.1, equipped with atomizing oil burners:
- Type C13, type C33, and type C53 boilers, including their combustion air supply and combustion products evacuation ducts and their terminals;
- type C43 boilers including their connection ducts but without the chimney which is erected as a shared duct system and which is part of the building;
- type C63 boilers, including the connecting piece as specified in 3.7, if not integrated into the boiler;
- type C83 boilers, including their connection ducts but without the chimney which is part of the building;
- that have a nominal useful heat output below or equal to 70 kW;
- where the temperature of the water does not exceed 100 °C during normal operation;
- where the maximum water-side operating pressure does not exceed 8 bar.
This European Standard is intended to establish specific requirements and test methods for type C atomizing oil burning central heating boilers with respect to construction, safety, fitness for purpose, rational use of energy, classification and marking.
This European Standard only covers standard tests.
For boilers that produce domestic hot water by a drum or exchanger, integrated or juxtaposed, (by accumulation of instant production), this standard only applies to hot water reheating system components that are not subject to operating conditions applicable to the boiler heating system.
This European Standard covers units consisting of boilers equipped with burners that meet the requirements of EN 267, with the following exceptions:
- maximum NOx and CO emission values, estimated for boilers according to the classes defined in
EN 303-2;
- air factor value, defined by the manufacturer and stated in the boiler’s technical specifications;
- marking and/or burner data plate which may provide information for the boiler data plate;
- installation recommendations for installing the burner on the boiler included

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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage for gas-fired standard and low temperature central heating boilers equipped with a forced draught burner. These boilers comprise a boiler body and a forced draught gas burner brought together at the producer's assembly facility, the whole being designed and marketed as a complete boiler. This standard does not apply to the case of the assembly of a boiler body and a forced draught gas burner designed and marketed separately. In this case, EN 303-3 applies. This European Standard applies to type B23 boilers with a nominal heat output not exceeding 1000 kW with a water temperature at normal operation not exceeding 105 °C and with a maximum water-side operating pressure not exceeding 8 bar. This European Standard does not contain all the necessary requirements for: - condensing boilers and combination boilers; - boilers intended to be installed in the open; - boilers permanently fitted with more than one flue outlet; - boilers intended to be connected to a common flue having mechanical extraction; - boilers equipped with several combustion chambers. This European Standard does not apply to living-space dedicated boilers (see 3.6). This European Standard only covers type testing.

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This European Standard specifies the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This European Standard applies to boilers of type B, as listed in 4.2:
3   that use one or more combustible gases of the three gas families at the pressures stated in Tables 16 and 17;
3   that have a nominal heat input (on the basis of net calorific value) exceeding 300 kW, but not exceeding 1  000 kW, including modular boilers;
3   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
3   where the maximum operating pressure in the water circuit does not exceed 6 bar;
3   that can give rise to condensation under certain circumstances;
3   of the standard and low-temperature types.
This European Standard applies to boilers designed for sealed water systems or for open water systems.
This European Standard does not contain all the requirements necessary for boilers:
3   intended to be installed in the open or in living rooms;
3   permanently fitted with more than one flue outlet;
3   where the combustion circuit is sealed with respect to the room where the boiler is installed;
3   of the condensing type;
3   intended to be connected to a common flue having mechanical extraction;
3   fitted with a forced draught burner in accordance with EN 676 (see EN 303-7);
3   producing hot water for domestic purposes.
This standard only covers type testing.
Matters related to quality assurance systems, tests during production, and certificates of conformity of auxiliary devices are not dealt with in this European Standard.

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This European Standard applies to type CX3 central heating boilers as specified in 4.1, equipped with atomizing oil burners:
   type C13, type C33, and type C53 boilers, including their combustion air supply and combustion products evacuation ducts and their terminals;
   type C43 boilers including their connection ducts but without the chimney which is erected as a shared duct system and which is part of the building;
   type C63 boilers, including the connecting piece as specified in 3.7, if not integrated into the boiler;
   type C83 boilers, including their connection ducts but without the chimney which is part of the building;
   that have a nominal useful heat output below or equal to 70 kW;
   where the temperature of the water does not exceed 100 °C during normal operation;
   where the maximum water-side operating pressure does not exceed 8 bar.
This European Standard is intended to establish specific requirements and test methods for type C atomizing oil burning central heating boilers with respect to construction, safety, fitness for purpose, rational use of energy, classification and marking.
This European Standard only covers standard tests.
For boilers that produce domestic hot water by a drum or exchanger, integrated or juxtaposed, (by accumulation of instant production), this standard only applies to hot water reheating system components that are not subject to operating conditions applicable to the boiler heating system.
This European Standard covers units consisting of boilers equipped with burners that meet the requirements of EN 267, with the following exceptions:
   maximum NOx and CO emission values, estimated for boilers according to the classes defined in
EN 303-2;
   air factor value, defined by the manufacturer and stated in the boiler’s technical specifications;
   marking and/or burner data plate which may provide information for the boiler data plate;
   installation recommendations for installing the burner on the boiler included

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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage for gas-fired central heating boilers equipped with a forced draught burner. These boilers are formed of the assembly of a boiler body and a forced draught gas burner achieved on the production site of the manufacturer, the whole being designed and marketed as a complete boiler. The boiler body shall be in accordance with EN 303-1. The construction of the forced draught gas burner shall be in accordance with EN 676.

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Replace the second paragraph by the following text :
"This European Standard applies to standard boilers and low-temperature boilers with a nominal heat output not exceeding 1000 kW and with a water temperature at normal operation not exceeding 105 °C."
Replace the 2nd dash of the third paragraph by the following text :
"- condensing boilers;"
Delete the last but one paragraph of EN 303-3 :
"This European Standard does not contain all the necessary requirements for low temperature boilers. Nevertheless, the testing methods defined by this European Standard for the determination of useful efficiencies can be used for low temperature boilers, after being adapted in accordance with annex H."

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Replace the second paragraph by the following text :
"This European Standard applies to standard boilers and low-temperature boilers with a nominal heat output not exceeding 1000 kW and with a water temperature at normal operation not exceeding 105 °C."
Replace the 2nd dash of the third paragraph by the following text :
"- condensing boilers;"
Delete the last but one paragraph of EN 303-3 :
"This European Standard does not contain all the necessary requirements for low temperature boilers. Nevertheless, the testing methods defined by this European Standard for the determination of useful efficiencies can be used for low temperature boilers, after being adapted in accordance with annex H."

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This standard specifies the requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers".  This standard applies to boilers of type B, as listed in 4.2:   ? that use one or more combustible gases of the three gas families at the pressures stated in Tables 14 and 15;  ? that have a nominal heat input (net CV basis) exceeding 70 kW, but not exceeding 300 kW, including modular boilers;  ? where the temperature of the heat transfer fluid does not exceed 105 oC during normal operation;  ? where the maximum operating pressure in the water circuit does not exceed 6 bar.  The standard applies to boilers designed for sealed water systems or for open water systems.  The standard does not contain all the requirements necessary for boilers:   ? intended to be installed in the open or in living rooms;  ? permanently fitted with more than one flue outlet;  ? where the combustion circuit is sealed with respect to the room where the boiler is installed;  ? of the condensing type;  ? of the low temperature type;  ? intended to be connected to a common flue having mechanical extraction;  ? fitted with a forced draught burner in accordance with EN 676;  ? producing hot water for domestic purposes.  This standard only covers type testing.

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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage of an assembly made up of a boiler body complying with EN 303- 11) and a forced draught gas burner complying with EN 676, using combustible gases, hereafter referred to as a "boiler".  This European Standard applies to a boiler:  - with a nominal output not exceeding 1 000 kW.  This European Standard does not contain all the necessary requirements for:  - assemblies designed as units;  - condensing boilers and low temperature boilers;  - boilers intended to be installed in the open;  - boilers permanently fitted with more than one flue outlet;  - boilers fitted with a draught diverter;  -  boilers intended to be connected to a common flue having mechanical    extraction.  This European Standard does not apply to living-space dedicated boilers   If the boiler body has already been tested with a liquid fuel burner, in accordance with EN 303-1, EN 303-2 and EN 304, only the tests described in annex G need to be performed.  In the case of a range of boilers, see annex F.  This European Standard does not contain all the necessary requirements for low temperature boilers. Nevertheless, the testing methods defined by this European Standard for the determination of useful efficiencies can be used for low temperature boilers, after being adapted in accordance with annex H.  This European Standard only covers type testing.

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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage of an assembly made up of a boiler body complying with EN 303- 11) and a forced draught gas burner complying with EN 676, using combustible gases, hereafter referred to as a "boiler".  This European Standard applies to a boiler:  - with a nominal output not exceeding 1 000 kW.  This European Standard does not contain all the necessary requirements for:  - assemblies designed as units;  - condensing boilers and low temperature boilers;  - boilers intended to be installed in the open;  - boilers permanently fitted with more than one flue outlet;  - boilers fitted with a draught diverter;  -  boilers intended to be connected to a common flue having mechanical    extraction.  This European Standard does not apply to living-space dedicated boilers   If the boiler body has already been tested with a liquid fuel burner, in accordance with EN 303-1, EN 303-2 and EN 304, only the tests described in annex G need to be performed.  In the case of a range of boilers, see annex F.  This European Standard does not contain all the necessary requirements for low temperature boilers. Nevertheless, the testing methods defined by this European Standard for the determination of useful efficiencies can be used for low temperature boilers, after being adapted in accordance with annex H.  This European Standard only covers type testing.

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This European Standard specifies, the requirements and test methods concerning, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This document is to be used in conjunction with FprEN15502-1:2020
This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5:
NOTE   For further background information on appliance types see EN 1749:2020.
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2018;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which can give rise to condensation under certain circumstances;
f)   which are declared in the instructions for installation to be either a “condensing” boiler or a "low temperature boiler" or a “standard boiler”; if no declaration is given the boiler is to be considered a “standard boiler”;
g)   which are intended to be installed inside a building or in a partially protected place;
h)   which are intended to produce also hot water either by the instantaneous or storage principle as a single unit.;
i)   which are designed for either sealed water systems or for open water systems;
j)   which are either modular boilers, or non modular boilers.
k) which are from the types C(10) that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa, and C(11) that have condensing boiler modules that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa."
NOTE   This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This European Standard does not cover all the requirements for:
aa)   Appliances above 1000 kW
ab) Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex XC);"
ac)   Appliances using flue dampers;
ad)   Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71, C81 ,C(12) and C(13);"
ae)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
af)   Appliances incorporating flexible plastic flue liners;
ag)   C(10) boilers:
1)    without a gas-air ratio control, or
2)    which are non-condensing appliances, or
3)    which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
ah)   C(11) boilers that have boiler modules:
1)    without a gas-air ratio control, or
2)    which are non-condensing appliances, or
3)    which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));"
ai)   Appliances intended to be connected to a (common) flue having mechanical extraction.
aj)   surface temperatures of external parts particular to children and elderly people
ak)   appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas.
al)    appliances equipped with an adaptive combustion control function (ACCF).
am)   boilers intended to be installed in areas accessible to elderly people and children

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This document specifies, the requirements and tests methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of hybrid products.
The hybrid product is composed by:
-   a gas boiler as heat generator which could supply the heat demand in all operating conditions;
-   an electrical heat pump, as heat generator, which has not to fulfil the heat demand in all operating conditions;
-   a control unit (see definition 3.10).
The gas boiler as part of the hybrid product covered by this document is a gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in EN 1749:2020:
a)   that have a nominal heat input (on the basis of gross calorific value) not exceeding 400 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which shall be classified as gas boiler;
f)   which are intended to be installed either indoors or outdoors in a partially protected place;
g)   which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit;
h)   which are designed for either sealed water systems or for open water systems.
This document provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this document, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Regulation UE/426/2016, is given in Clause 11.
This document does not cover all the requirements for:
Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD);
a)   appliances using flue dampers;
b)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81;
c)   appliances incorporating flexible plastic flue liners;
d)   appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca)).
This document specifies minimum operating requirements which ensure that the products are fit for the use designated by the manufacturer when used for space heating and/or DHW production.
This part specifies the common requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy.
This document is to be used in conjunction with:
a)   the gas fired boiler, the generic part EN 15502-1 and specific Part 2-1 and Part 2-2.
b)   the electrical heat pump, EN 14511-4:2018, EN 378-1:2016 to EN 378-4:2016+A1:2019 and FprEN 14825:2020.
c)   electrical safety, EN 60335-1:2019, EN 60335-2-102:2016, EN 60335-2-40:2012, EN 60335-2-40/A2:2009 and EN 60204-1.
d)   for domestic hot water production, EN 13203-5.

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This International Standard specifies requirements and test methods only for hoists and body-support units
intended for the transfer of disabled persons as classified in ISO 9999:2002:
⎯ 12 36 03 Mobile hoists with sling seats
⎯ 12 36 04 Standing mobile hoists
⎯ 12 36 06 Mobile hoists with solid seats
⎯ 12 36 09 Hoist trolleys
⎯ 12 36 12 Stationary hoists fixed to the wall/walls, floor and/or ceiling
⎯ 12 36 15 Stationary hoists fixed to, mounted in or on another product
⎯ 12 36 18 Stationary free-standing hoists
⎯ 12 36 21 Body-support units for hoists
This International Standard does not apply to devices that transport persons between two levels (floors) of a
building.
It does not include methods for the determination of ageing or corrosion of such hoists and units.
The requirements of this International Standard are formulated with regard to the needs of both the disabled
persons being hoisted and the attendant using the hoist.

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This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers". Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any. This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in CEN/TR 1749: a) that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW; b) that use one or more combustible gases of the three gas families at the pressures stated in EN 437; c) where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation; d) where the maximum operating pressure in the water circuit does not exceed 6 bar; e) which may or may not give rise to condensation under certain circumstances; f) which are declared in the installation instructions to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler"; if no declaration is given the boiler is to be considered a "standard boiler"; g) which are intended to be installed either indoors or outdoors in a partially protected place; h) which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit; i) which are designed for either sealed water systems or for open water systems; j) which are either modular boilers, or non- modular boilers. This European Standard will be used in conjunction with the General Requirements Standard EN 15502-1. This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed. An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11. This European Standard does not cover all the requirements for: k) Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD); l) Appliances using flue dampers; m) Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81; n) C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW; o) Appliances incorporating flexible plastic flue liners; p) Appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca)); q) Appliances incorporating a combined combustion products circuit that is designed to operate under overpressure (for example Cb)); r) Appliances intended to be connected to a (common) flue having mechanical extraction.

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When final draft in CCMC - Double check that a decision (to submit to FV) is taken both by CEN/TC 166 and CEN/TC 109 - See CEN/BT Decision 72/2014

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This International Standard specifies requirements and test methods only for hoists and body-support units
intended for the transfer of disabled persons as classified in ISO 9999:2002:
⎯ 12 36 03 Mobile hoists with sling seats
⎯ 12 36 04 Standing mobile hoists
⎯ 12 36 06 Mobile hoists with solid seats
⎯ 12 36 09 Hoist trolleys
⎯ 12 36 12 Stationary hoists fixed to the wall/walls, floor and/or ceiling
⎯ 12 36 15 Stationary hoists fixed to, mounted in or on another product
⎯ 12 36 18 Stationary free-standing hoists
⎯ 12 36 21 Body-support units for hoists
This International Standard does not apply to devices that transport persons between two levels (floors) of a
building.
It does not include methods for the determination of ageing or corrosion of such hoists and units.
The requirements of this International Standard are formulated with regard to the needs of both the disabled
persons being hoisted and the attendant using the hoist.

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EN 15502 1:2020, Clause 1 is replaced by the following:
This document specifies, the requirements and test methods concerning, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers".
This document is to be used in conjunction with FprEN 15502-1:2020.
This document covers certain gas-fired central heating boilers from the types C1 up to C(11) and the types B2, B3 and B5:
NOTE 1   For further background information on appliance types see EN 1749:2020.
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2018;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which can give rise to condensation under certain circumstances;
f)   which are declared in the instructions for installation to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler"; if no declaration is given the boiler is to be considered a "standard boiler";
g)   which are intended to be installed inside a building or in a partially protected place;
h)   which are intended to produce also hot water either by the instantaneous or storage principle as a single unit;
i)   which are designed for either sealed water systems or for open water systems;
j)   which are either modular boilers, or non modular boilers.
k)   which are from the types C(10) that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa, and C(11) that have condensing boiler modules that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa.
NOTE 2   This document provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This document does not cover all the requirements for:
aa)   appliances above 1 000 kW;
ab)   appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex AB);
ac)   appliances using flue dampers;
ad)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71, C81, C(12) and C(13);
ae)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
af)   appliances incorporating flexible plastic flue liners;
ag)   C(10) boilers:
1)   without a gas-air ratio control, or
2)   which are non-condensing appliances, or
3)   which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
ah)   C(11) boilers that have boiler modules:
1)   without a gas-air ratio control, or
2)   which are non-condensing appliances, or
3)   which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
ai)   appliances intended to be connected to a  flue having mechanical extraction;
aj)   surface temperatures of external parts particular to children and elderly people;
ak)   appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas;
al)   appliances equipped with an adaptive combustion control function (ACCF);
am)   boilers intended to be installed in areas accessible to elderly people and children.

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This document specifies, the requirements and tests methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of hybrid products.
The hybrid product is composed by:
-   a gas boiler as heat generator which could supply the heat demand in all operating conditions;
-   an electrical heat pump, as heat generator, which has not to fulfil the heat demand in all operating conditions;
-   a control unit (see definition 3.10).
The gas boiler as part of the hybrid product covered by this document is a gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in EN 1749:2020:
a)   that have a nominal heat input (on the basis of gross calorific value) not exceeding 400 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which shall be classified as gas boiler;
f)   which are intended to be installed either indoors or outdoors in a partially protected place;
g)   which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit;
h)   which are designed for either sealed water systems or for open water systems.
This document provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this document, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Regulation UE/426/2016, is given in Clause 11.
This document does not cover all the requirements for:
Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD);
a)   appliances using flue dampers;
b)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81;
c)   appliances incorporating flexible plastic flue liners;
d)   appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca)).
This document specifies minimum operating requirements which ensure that the products are fit for the use designated by the manufacturer when used for space heating and/or DHW production.
This part specifies the common requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy.
This document is to be used in conjunction with:
a)   the gas fired boiler, the generic part EN 15502-1 and specific Part 2-1 and Part 2-2.
b)   the electrical heat pump, EN 14511-4:2018, EN 378-1:2016 to EN 378-4:2016+A1:2019 and FprEN 14825:2020.
c)   electrical safety, EN 60335-1:2019, EN 60335-2-102:2016, EN 60335-2-40:2012, EN 60335-2-40/A2:2009 and EN 60204-1.
d)   for domestic hot water production, EN 13203-5.

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This standard is applicable to heating boilers in accordance with prEN 303-1 up to a nominal heat output of 1000 kW and prEN 303-4 up to a nominal heat output of 70 kW with atomizing oil burners in accordance with EN 267 which are designed for operating with liquid fuels.  The requirements of this standard apply to type testing to heating boilers which are tested on a test rig in accordance with the test code given in EN 304.  This standard specifies the necessary heating technical requirements for heating boilers with liquid fuels.  NOTE: This Standard can also be used as the basis for evaluation of package boiler/burner units.

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This standard is applicable to heating boilers in accordance with prEN 303-1 up to a nominal heat output of 1000 kW and prEN 303-4 up to a nominal heat output of 70 kW with atomizing oil burners in accordance with EN 267 which are designed for operating with liquid fuels.  The requirements of this standard apply to type testing to heating boilers which are tested on a test rig in accordance with the test code given in EN 304.  This standard specifies the necessary heating technical requirements for heating boilers with liquid fuels.  NOTE: This Standard can also be used as the basis for evaluation of package boiler/burner units.

  • Standard
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This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”. Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any. This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in CEN/TR 1749:2009: a) that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW; b) that use one or more combustible gases of the three gas families at the pressures stated in EN 437; c) where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation; d) where the maximum operating pressure in the water circuit does not exceed 6 bar; e) which may or may not give rise to condensation under certain circumstances; f) which are declared in the installation instructions to be either a “condensing” boiler or a "low temperature boiler" or a “standard boiler”; if no declaration is given the boiler is to be considered a “standard boiler”; g) which are intended to be installed either indoors or outdoors in a partially protected place; h) which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit; i) which are designed for either sealed water systems or for open water systems; j) which are either modular boilers, or non- modular boilers. This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed. An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11. This European Standard does not cover all the requirements for: k) Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD); l) Appliances using flue dampers; m) Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81; n) C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW; o) Appliances incorporating flexible plastic flue liners; p) Appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca)); q) Appliances incorporating a combined combustion products circuit that is designed to operate under overpressure (for example Cb)); r) Appliances intended to be connected to a (common) flue having mechanical extraction.

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This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers".
Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any.
This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in CEN/TR 1749:
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which may or may not give rise to condensation under certain circumstances;
f)   which are declared in the installation instructions to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler"; if no declaration is given the boiler is to be considered a "standard boiler";
g)   which are intended to be installed either indoors or outdoors in a partially protected place;
h)   which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit;
i)   which are designed for either sealed water systems or for open water systems;
j)   which are either modular boilers, or non- modular boilers.
This European Standard will be used in conjunction with the General Requirements Standard EN 15502-1.
This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11.
This European Standard does not cover all the requirements for:
k)   Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD);
l)   Appliances using flue dampers;
m)   Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81;
n)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
o)   Appliances incorporating flexible plastic flue liners;
p)   Appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca));
q)   Appliances incorporating a combined combustion products circuit that is designed to operate under overpressure (for example Cb));
r)   Appliances intended to be connected to a (common) flue having mechanical extraction.

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This European standard applies to gas-fired central heating boilers, which are declared by the manufacturer to be "condensing boilers":  - of types B (excluding appliances without a fan) and C, - using one or more gases corresponding to the three gas families, and - for which the nominal heat input is less than or equal to 70 kW.  This European standard only covers type testing.  This European standard completes or modifies the standards EN 297, prEN 483 and EN 625, hereafter called "boiler standards". It specifies supplementary requirements for condensing boilers.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Need of a BT C for allowing more amendments than foreseen in IR ++ Exceptional derogation from IR granted in case of EN 297, allowing more than ++ 3 Amd. (but not more than 5) (BT 27/1996)

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Has to consider also Directive 92/42 on efficiency of boilers !! ++ Exceptional derogation from IR granted in case of EN 297, allowing more than ++ 3 Amd. (but not more than 5) (BT 27/1996)

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This European standard applies to gas-fired central heating boilers, which are declared by the manufacturer to be "condensing boilers":  - of types B (excluding appliances without a fan) and C, - using one or more gases corresponding to the three gas families, and - for which the nominal heat input is less than or equal to 70 kW.  This European standard only covers type testing.  This European standard completes or modifies the standards EN 297, prEN 483 and EN 625, hereafter called "boiler standards". It specifies supplementary requirements for condensing boilers.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Need of a BT C for allowing more amendments than foreseen in IR ++ Exceptional derogation from IR granted in case of EN 297, allowing more than ++ 3 Amd. (but not more than 5) (BT 27/1996)

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Has to consider also Directive 92/42 on efficiency of boilers !! ++ Exceptional derogation from IR granted in case of EN 297, allowing more than ++ 3 Amd. (but not more than 5) (BT 27/1996)

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This amendment 2 will incorporate in EN 483:1999 the EU Directive 92/42/EEC on efficiency requirements.

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This amendment 2 will incorporate in EN 483:1999 the EU Directive 92/42/EEC on efficiency requirements.

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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage for heating boilers (standard-heating and low temperature boilers) fired by liquid fuels from steel and cast iron with burners according to the relevant burner standards (for atomising oil burners, see. EN 267) up to a nominal heat output of 10 MW. They are operated, either with negative pressure (natural draught boiler) or with positive pressure (pressurised boiler) in the combustion chamber, in accordance with the boiler manufacturer's instructions
Boilers in accordance with this European Standard are designed for the heating of central heating installations in which the heat carrier is water, and the maximum allowable operating temperature of which is up to 110 °C and the maximum safety temperature limiter of 120 °C. The maximum allowable operating pressure is 10 bar.
This standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, oil or gas fired condensation boilers, boilers with oil vaporisation burners. For these boilers there are further requirements.
For gas-fired central heating boilers equipped with a forced draught burner of nominal heat out put not exceeding 1000 kW, see prEN 303-7.
For shell boilers with a nominal heat output exceeding 10 MW and a maximum safety temperature limiter exceeding 120 °C, see EN 12953 series.
NOTE   Definitions for heating boiler and low temperature boiler see Council Directive 92/42/EEC.

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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage for heating boilers (standard-heating and low temperature boilers) fired by liquid fuels from steel and cast iron with burners according to the relevant burner standards (for atomising oil burners, see. EN 267) up to a nominal heat output of 10 MW. They are operated, either with negative pressure (natural draught boiler) or with positive pressure (pressurised boiler) in the combustion chamber, in accordance with the boiler manufacturer's instructions
Boilers in accordance with this European Standard are designed for the heating of central heating installations in which the heat carrier is water, and the maximum allowable operating temperature of which is up to 110 °C and the maximum safety temperature limiter of 120 °C. The maximum allowable operating pressure is 10 bar.
This standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, oil or gas fired condensation boilers, boilers with oil vaporisation burners. For these boilers there are further requirements.
For gas-fired central heating boilers equipped with a forced draught burner of nominal heat out put not exceeding 1000 kW, see prEN 303-7.
For shell boilers with a nominal heat output exceeding 10 MW and a maximum safety temperature limiter exceeding 120 °C, see EN 12953 series.
NOTE   Definitions for heating boiler and low temperature boiler see Council Directive 92/42/EEC.

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